question_answer1) An urn contains nine balls of which three are red, four are blue and two are green. Three balls are drawn at random without replacement from the urn. The probability that the three balls have different colours is - AIEEE Solved Paper-2010
A) \[\frac{1}{3}\] done clear
B) \[\frac{2}{7}\] done clear
C) \[\frac{1}{21}\] done clear
D) \[\frac{2}{23}\] done clear
View Answer play_arrowquestion_answer2) Directions: Questions number 86 are Assertion - Reason type questions. Each of these questions contains two statements: Statement - 1 (Assertion) and Statement - 2 (Reason). Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select the correct choice. Four numbers are chosen at random (without replacement) from the set {1, 2, 3, ....., 20}. Statement - 1: The probability that the chosen numbers when arranged in some order will form an AP is\[\frac{1}{85}\] Statement - 2: If the four chosen numbers form an AP, then the set of all possible values of common difference is \[(\pm 1,\pm 2,\pm 3,\pm 4,\pm 5\}\] Statement - 1 (Assertion) and Statement - 2 (Reason). Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select the correct choice. AIEEE Solved Paper-2010
A) Statement -1 is true, Statement -2 is true; Statement -2 is a correct explanation for Statement -1 done clear
B) Statement -1 is true, Statement -2 is true; Statement -2 is not a correct explanation for Statement -1. done clear
C) Statement -1 is true, Statement -2 is false. done clear
D) Statement -1 is false, Statement -2 is true. done clear
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